Samsung GS3, Sent in took upto 2 months problems

I sent in my phone to Cell C due to issues being that the internet and screen with black out the whole time or sometimes. They sent it back to me saying they fixed the issue. Again I had the same issue, I sent it to the store they sent it to be fixed. It came back with a swollen battery and they said was something wrong with the battery but when I sent the phone first time the battery wasn't swollen. The battery won't even fit the cover on to the device. They gave us a different battery and faulted on that. Cheating us out. We sent it back with saying please repair it properly or replace it and they sent it back saying something wrong with the battery but obviously there's something wrong with the battery if it's swollen.<br> <br> Cell C won't attend to this matter and I have to run all call around using my airtime billing up my account because Cell C can't fix this matter. Repair Centre doesn't even have direct line or number, you have to be transferred. I waited up to 10 minutes for representative but no one answered.<br> <br> I honesty feel like taking it to Samsung rather as they can do a much better job. I am on Contract with Cell C and I want to cancel my contract with these people.